平台式航空重力勘查系统国产化研究

doi:10.11720/wtyht.2021.0017

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Abstract

To meet the accuracy requirements of airborne gravity surveys for deep resource exploration, an airborne gravity survey platform has been developed and integrated based on previous research. The platform system is an airborne gravimeter platform consisting of a three-axis stabilized platform and a quartz flexible pendulum accelerometer. It adopts self-calibration technology and the real-time error estimation and correction technology of platform attitude. Meanwhile, it is equipped with a navigation and positioning system, a vibration reduction system, an unattended system, and data processing software. Flying survey data show that the internal coincidence accuracy of the repeated-line flight data of the airborne gravity survey platform is less than 0.6×10^-5 m/s²(100 s), reaching the international advanced level. Therefore, this platform allows the technology and equipment of airborne gravity surveys to be localized.

Key words： airborne gravimeter platform airborne gravity survey FIR (finite impulse response) low pass filter Kalman filter

Received: 13 January 2021 Published: 15 December 2021

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	Articles by authors
	Feng LUO
	Xi-Hua ZHOU
	Ping-Hua HU
	Zuo-Xi JIANG
	Guan-Xin WANG
	Jin-Hong QU
	Xing-Su LI
	Zhao-Liang LI
	Ming ZHAO

Cite this article:

Feng LUO,Xi-Hua ZHOU,Ping-Hua HU, et al. Research on localization of platform-based airborne gravity exploration system[J]. Geophysical and Geochemical Exploration, 2021, 45(5): 1256-1265.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.0017 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I5/1256

Composition diagram of platform-based airborne gravity exploration system

Composition block diagram of platform-based airborne gravity

Flow chart of self calibration algorithm

Block diagram of kalman filter

Data processing software interface of platform-based airborne gravimetry

Flow chart of platform-based airborne gravity data processing

Realization of zero phase filter

Example of zero phase filter

Comparison of repeated measurement of airborne space gravity anomaly along East—West repeated line(FIR low pass filter (100 s))

Comparison of repeated measurement of airborne space gravity anomaly along North—South repeated line(FIR low pass filter (100 s))

Comparison of repeated measurement of GT North—South airborne space gravity anomaly

Intersection statistics of original space gravity anomaly of platform-based airborne gravity exploration system

Intersection statistics of original space gravity anomaly of GT gravity exploration system

Original space gravity anomaly map of platform-based airborne gravity exploration system

Original space gravity anomaly map of GT exploration system

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